package com.smartEdu.interceptors;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;
import com.smartEdu.commons.LogCvt;
import com.smartEdu.commons.Tag_Tips;
import com.smartEdu.commons.Tag_Tips_web;
import com.smartEdu.vo.web.SysParamVo;

public class InterceptorWeb extends HandlerInterceptorAdapter{  
    public static final String TAG = "InterceptorWeb";  
    /* 
     * 利用正则映射到需要拦截的路径     
      
    private String mappingURL; 
     
    public void setMappingURL(String mappingURL) {     
               this.mappingURL = mappingURL;     
    }    
     */  
    /**  
     * 在业务处理器处理请求之前被调用  
     * 如果返回false  
     *     从当前的拦截器往回执行所有拦截器的afterCompletion(),再退出拦截器链 
     * 如果返回true  
     *    执行下一个拦截器,直到所有的拦截器都执行完毕  
     *    再执行被拦截的Controller  
     *    然后进入拦截器链,  
     *    从最后一个拦截器往回执行所有的postHandle()  
     *    接着再从最后一个拦截器往回执行所有的afterCompletion()  
     */    
    @Override    
    public boolean preHandle(HttpServletRequest request,    
            HttpServletResponse response, Object handler) throws Exception { 
    	if (handler instanceof ResourceHttpRequestHandler)
    	    return true;
    	//从request中获取httpsession
    	HttpSession httpsession = request.getSession(true);
    	Object userid  = httpsession.getAttribute(Tag_Tips_web.LOGINUSER);
    	Object loginname = httpsession.getAttribute(Tag_Tips_web.LOGINAME);
    	if((userid != null) && (loginname != null)) {
			SysParamVo sysVo  = new SysParamVo();
			sysVo.setUid(userid.toString());
			sysVo.setLoginname(loginname.toString());
			httpsession.setAttribute(Tag_Tips_web.LOGINUSER, userid);
			httpsession.setAttribute("sysparam", sysVo);
		}
    	else {
    		response.sendRedirect(request.getContextPath()+"/login");
    		return false;
    	}
    	
    	
//    	log.info(ClassStatic.redis.getResource().get("holy"));
//    	request.getRequestDispatcher("/login").forward(request, response);
//    	LogCvt.info("==============执行顺序: 1、preHandle================");
//    	if (request.getParameter("JSESSIONID")!=null) {
//    		return true;
//		}
//    	else return false;
//    	log.info(request.getHeader("TOKENT"));
//    	LogCvt.info("new Request");
//    	System.err.println(request.getCookies().length);
//    	if (request.getSession(false)==null) {
////    		request.getSession().setAttribute("TOKENT", request.getSession().getId());
////    		Cookie cookie=new Cookie("TOKENT", request.getSession().getId()); 
////    		cookie.setMaxAge(-1); 
////    		response.addCookie(cookie);
//    		System.err.println("new request");
//			return true;
//		}
//    	else return false;
//        if ("GET".equalsIgnoreCase(request.getMethod())) {  
////            RequestUtil.saveRequest();  
//        }    
        String requestUri = request.getRequestURI();  
        String contextPath = request.getContextPath();  
        String url = requestUri.substring(contextPath.length());  
        
        LogCvt.info("请求url:"+requestUri);    
        LogCvt.info("内部url:"+url);            
//        String username =  (String)request.getSession().getAttribute("user");   
//        if(username == null){
//        	response.sendRedirect("/smartEducation/logins/weblogin");
//        } 
        return true;     
    }    
    
    /** 
     * 在业务处理器处理请求执行完成后,生成视图之前执行的动作    
     * 可在modelAndView中加入数据，比如当前时间 
     */  
    @Override    
    public void postHandle(HttpServletRequest request,    
            HttpServletResponse response, Object handler,    
            ModelAndView modelAndView) throws Exception {       
        if(modelAndView != null){  //加入当前时间    
            modelAndView.addObject("var", "测试postHandle");    
        }    
    }    
    
    /**  
     * 在DispatcherServlet完全处理完请求后被调用,可用于清理资源等   
     * 当有拦截器抛出异常时,会从当前拦截器往回执行所有的拦截器的afterCompletion()  
     */    
    @Override    
    public void afterCompletion(HttpServletRequest request,    
            HttpServletResponse response, Object handler, Exception ex)    
            throws Exception {    
    }    
  
} 